The morning news. [volume] (Savannah, Ga.) 1887-1900, 1887-05-16
Popular Science.

DR.. Martineau, a French physician, claims
that carbonate of lithla and arseniate of so
da in aerated water used to the exclusion of
other drinks is an almost infa llible cure for
diabetes.
1t is a well-known fact among railroad
men that on railroads running north and
south the west rails wear out the faster that
five rails will wear out on the west side of
the track while three are doing service on
the east side.
The recent experiments of an Italian phys
icist have shown that gases cannot be
forced through glass by any available me-
chanical, chemical or electrical means Even
a pressure Of 1890 pounds to the square
inch had no effect
The following mixture is given by cor
respondent in LIndustrie Terrific as suita-
bic for wateiproofing all kinds of woven
fabrics: Linseed oil TO; acetate Of lead,
1S45; litharge, 100: amber earth, o. ; vege-
table wax, 1.3; soap powder, 1.2; Manila
gum, or lampblack, 40; essence of turpen-
tine, 30; India rubber varnish. 1855; total
100.
1t MAJ be new to many that the word
'sarcophagus" means literally hesh-eater,
and was applied to collins from the peculiar
kind of stone Of which the ancient Roman
collins were made. This stone is supposed
to have been species Of limestone, and it
Is claimed had the property necessary en-
tirely to consume q body, with the excep-
ton of the teeth, in forty days; hence the
name.
The invention Of a new optical glass is
said to be creating a sensation in the Ger
man scientific world The glass, swing to
its great refractory power, promises to be OF
marked influence in practical optics, mas
much as it will admit of the production of
lenses of short focal width, such as it has
been hitherto impossible TO obtain. For mi
croscopic photography it will DO of the
greatest Importance.
The Guide Scientifque gives the follow
ing method of making artificial whetstones
Geatine of good quality in its own weight of
water, the operation being conducted in a
dark room. TO the solution ! l-2 per cent
of bichromate of potash is added, which has
been previously dissolved In q little water
A quantity Of very fine emery, equal TO
nine times tho weight OF the gelatine, is in
timately mixed with the gelatine solution
Pulveri2ed flint may be substituted for enc
ry The mass is nodded into any desired
shape and is then consolidated by heavy
pressure. It is dried by exposure TO strong
sunlight for several hours.
To build a chimney that win draw forever
and not fill up with SCOT, you must build It
large enough, sixteen inches square; use
good brick and clay instead of lime up to
the comb; plaster it inside with clay mixed
with salt; for chimney tops use the very
best of brick, wet them and lay them in &C.
ment mortar. The chimney should not he
built tight TO beam or rafters, as most CHM
neys settle a little, and If too tight between
the beams and rafters, there is where the
crack in your chimney comes and where the
most of the fires originate, as tho chimney
sometimes gets red hot. A chimney built
from cellar up Is better and less dangerous
than one hung on the wall. Don't get your
stovepive hole 80 close to the ceiling, eight
eea inches from Il.